John Barton (quaker)
Encyclopedia
John Barton was one of the nine English Quaker members of the "Society for the Abolition of the Slave Trade" set up in 1787 by William Wilberforce
William Wilberforce
William Wilberforce was a British politician, a philanthropist and a leader of the movement to abolish the slave trade. A native of Kingston upon Hull, Yorkshire, he began his political career in 1780, eventually becoming the independent Member of Parliament for Yorkshire...

 and two other Anglicans . Their efforts ultimately led to the passing of the Abolition of the Slave Trade Act, 1807 by British Parliament on 25 March in that year.
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